Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Autónoma de Baja California
2005
|
| Subjects: | |
| Online Access: | https://www.redalyc.org/articulo.oa?id=48031403 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Table of Contents:
- On the variation of alkalinity during phytoplankton photosynthesis F. Fraga X. A. Álvarez-Salgado Ciencias de la Tierra phytoplankton carbon cycling mineralization total alkalinity primary production The alkalinity of the organic constituents of marine phytoplankton and their participation in the total alkalinity (TA) change ofseawater during photosynthesis are carefully assessed. Quantification of the contribution of phytoplankton chlorophyll, proteinsand phosphorus compounds to the hydrogen ion balance of seawater in terms of total inorganic nitrogen (∆[NT] = ∆[NH4+] +∆[N2] + ∆[NO2] + ∆[NO3]) and total inorganic phosphorus (∆[PT]) changes during photosynthesis yielded that the organiccomponents of marine phytoplankton are alkaline by 0.06 × ∆[NT] 0.49 × ∆[PT], and that the potential total alkalinity (TAP)during photosynthesis is TAP = TA [NH4] + 0.93 × [NO2] + [NO3] + 0.08 × [NT] + 0.23 × [PT] for unfiltered seawater samplesand TAP = TA [NH4] + 0.93 × [NO2] + [NO3] + 0.02 × [NT] + 0.26 × [PT] for filtered seawater samples. These equationscorrect the traditionally used expression TAP = TA + [NO3]. The TAP anomalies are produced, in order of increasing importance,by N2 fixation, DMSP production and CaCO3 fixation. 2005 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48031403 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.4 Vol.31